Quicktime File Format (2012-08-14).pdf

Media Data Atom TypesPacketization Hint Sample Data for Data Format 'rtp 'Immediate Data ModeThe data table entry has the format for immediate mode shown in Figure 4-18 (page 264).Figure 4-18Immediate data mode table entryField descriptionsData source = 1A value of 1 indicates that the data is to be immediately taken from the bytes of data that follow.Immediate lengthAn 8-bit integer indicating the number of bytes to take from the data that follows. Legal values rangefrom 0 to 14.Immediate data14 bytes of data to place into the payload portion of the packet. Only the first number of bytes indicatedby the immediate length field is used.Sample ModeThe data table entry has the format for sample mode shown in Figure 4-19 (page 264).Figure 4-19Sample mode table entry formatField descriptionsData source = 2A value of 2 indicates that the data is to be taken from a track’s sample data.2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.264